The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 1991
Filed:
Aug. 31, 1989
Shigeo Tanji, Kawasaki, JP;
Kazutoshi Hayashi, Kawasaki, JP;
Hideo Yamada, Kawasaki, JP;
Norio Endoh, Suzaka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A sheet switch comprises a pair of flexible insulative films, one of which is provided with a plurality of electrodes, resistances connected to the electrodes, respectively, and line patterns for externally connecting the electrodes via the resistances. The other insulative film is also provided with a plurality of second electrodes at positions corresponding to the first electrodes, respectively, and a space is defined between each of the facing electrodes. The line pattern is a laminated structure consisting of an underlayer formed of a low resistance paste and an upper layer formed of a high resistance paste coated over the underlayer. The underlayer formed of a low resistance paste is partially disconnected to define a gap, so that the resistance is formed integrally with the upper layer formed of a high resistance paste at a position corresponding to the gap.